function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cano, Enio B.', 1],
    ['Carvalho, Edrielly C. & Maldaner, Maria Eduarda', 1],
    ['Chamorro, William & Marin-Armijos, Diego & senjo, Angelico', 3],
    ['Edmonds, W. D. & Figueroa, Luis', 1],
    ['Figueroa, Luis & Edmonds, W. D.', 1],
    ['Groll, Elisa Von', 20],
    ['Hielkema, Auke J. & Hielkema, Meindert A.', 18],
    ['Valois, Marcely C. & Vaz-de-Mello, Fernando Z.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=46)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);